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Photon asymmetry in radiative muon capture on calcium

Virtue, C.J. ; Aniol, K.A. ; Entezami, F.E. ; et al.

Nucl.Phys.A 517 (1990) 509-532, 1990.

Inspire Record 297073 DOI 10.17182/hepdata.36825

The photon asymmetry (α γ ) and partial branching ratio above 57 MeV ( R k > 57) have been measured for radiative muon capture on 40 Ca in order to determine the magnitude of the induced-pseudoscalar coupling constant, g p . Based on 2500 events a value of α γ = 1.32 +0.57 −0.47 is obtained from a fit to the photon time spectrum; this implies a value for g p <5.2 g A . For the first time the asymmetry signal is clearly visible and unconstrained multi-parameter fits reproduce the parameters obtained from the decay electron spectrum. The present results are discussed and compared in detail with previous results.

3 data tables

Table 1

No description provided.

Table 2

GP/GA DEDUCED FROM ASYM.

Table 3

No description provided.